Haeresis 51 — Against the Alogi
Conception date and the birth on Tybi the eleventh
For we have found it written somewhere also among these accounts that the Word from God was born about the fortieth year of Augustus—which escaped the writer, either because the beta of the numeral was erased and only the mu remained, making only forty years; for he was born in the forty-second year of Augustus.
And it says that on the twelfth before the Kalends of July or of June (I cannot say which), in the consulship of Sulpicius Camarinus and Vettius Pompeianus as consuls, he was conceived;
and this I considered: that those who spoke of the day of the conception and how Gabriel announced the good news to the virgin said this because of the suspicion of certain people who say in tradition that he was born through seven months.
For we have found from this aforesaid date until Tybi the eleventh and the eighth before the Ides of January, when in truth the Theophanies took place and he was born, a time of seven months according to the lunar course less four days.
So then if you find these things written somewhere in annotations, do not err concerning the knowledge. For in fact the sure birth of Christ is Tybi the eleventh.
But some say that he was carried in the womb for ten months less fourteen days and eight hours, so as to be nine months and fifteen days and four hours, hinting at what was spoken in Solomon: ‘formed in blood in a ten-month period.’
Nevertheless from every side it has been shown that on the eleventh of Tybi according to the Egyptians the aforesaid incarnate birth of the Lord took place. And about that same eleventh, after thirty years, the first sign took place in Cana of Galilee, that the water became wine.
Greek: Karl Holl, GCS 31 (1922); digital via Open Greek and Latin / First1KGreek (CC BY-SA 4.0). English: study translations for BWAB Library—not the copyrighted Frank Williams (Brill) or Amidon (OUP) translations. Partial: Haer. 40 and 51 only so far.